NIKE Mens Grey/White Tracksuit Bottoms 100% Cotton New Nike Mens Grey/White Tracksuit Bottoms Size L (UK 34/36). Part of the Nike Athletic Department range, this brand new Nike tracksuit bottom is made out of 76% cotton and 24% polyester and is machine washable. It comes styled with an elasticated waist with an adjustable internal grey drawcord fastening for ultimate comfort and support, and a white embroidered Nike logo front of the left leg. Also featured are 2 slit pockets, a pocket at the back of the right leg, elasticated ankles, and a soft fleece inner.